fake gallery with gridView

public class ServiceFragment
    extends Fragment
{

    private String TAG = "ServiceFragment";//for debug only

    private Integer TypeMerchant = 1;// item type ,merchant

    private Integer TypeProduct = 0;//item type ,product

    private ArrayList<HashMap<String, Object>> date;

    private ArrayList<HashMap<String, Object>> originalContent;
    

    private MyAdapter adapter;

    static class ViewHolder {
        
        TextView name;

        TextView address_description;

        TextView telephone;

        ImageView image;

        int itemType; // 1 for merchant while 0 for product
    }

    private GridView mGridView;
    private HorizontalScrollView mScrollView;
    private View    serviceView;
    /**
     * gridview 單元格所顯示內容的寬度
     */
    private int cWidth = 260;
    /**
     * gridview 單元格間的間距
     */
    private int hSpacing = 10;
    private int mWidthPixels;
    
    @Override
    public void onCreate( Bundle savedInstanceState )
    {
        super.onCreate( savedInstanceState );
    }

    @Override
    public View onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState )
    {
        super.onCreateView( inflater, container, savedInstanceState );

        final View view = inflater.inflate( R.layout.fragment_service, container, false );
        
        serviceView =   view;
        mWidthPixels = getResources().getDisplayMetrics().widthPixels;
        findView();
        setValue();
        setListener();
       
        return view;
    }

    private void findView() {
        mGridView = (GridView) serviceView.findViewById(R.id.mGridView);
        mScrollView = (HorizontalScrollView) serviceView.findViewById(R.id.mScrollView);
        mScrollView.setHorizontalScrollBarEnabled(false);//去除滾動條
    }

    private void setValue() {
        MAdapter mAdapter = new MAdapter(getActivity());
        mGridView.setAdapter(mAdapter);
        
//        Log.d(TAG,"num---->"+mAdapter.getCount());
//        Log.d(TAG,"Width---->"+mAdapter.getCount() * (cWidth + hSpacing));

        LayoutParams params = new LayoutParams(mAdapter.getCount() * (cWidth + hSpacing),
                                               LayoutParams.WRAP_CONTENT);
        mGridView.setLayoutParams(params);
        mGridView.setColumnWidth(cWidth);
        mGridView.setHorizontalSpacing(hSpacing);
        mGridView.setStretchMode(GridView.NO_STRETCH);
        mGridView.setNumColumns(mAdapter.getCount());
    }

    private void setListener() {
        mGridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                int x = (int) (view.getLeft()+view.getWidth()/2.0-mWidthPixels/2.0);
                mScrollView.smoothScrollTo(x, 0);
            }
        });
    }

    class MAdapter extends BaseAdapter {
        Context mContext;
        LayoutInflater mInflater;

        public MAdapter(Context c) {
            mContext = c;
            mInflater = LayoutInflater.from(mContext);
            date = getDate();
        }

        @Override
        public int getCount() {
            return date.size();
        }

        @Override
        public Object getItem(int arg0) {
            return date.get( arg0 );
        }

        @Override
        public long getItemId(int arg0) {
            return arg0;
        }

        @Override
        public View getView(int position, View contentView, ViewGroup arg2) {
            ViewHolder holder;
            if (contentView == null) {
                holder = new ViewHolder();
                contentView =   mInflater.inflate(R.layout.fragment_service_gallery_item, null);
                holder.image    =   (ImageView) contentView.findViewById(R.id.imageViewLogo);
                holder.name =   (TextView) contentView.findViewById(R.id.textViewPriceProduct);
                holder.address_description  =   (TextView) contentView.findViewById(R.id.textViewPriceAdditionalProduct);
                holder.telephone    = (TextView) contentView.findViewById(R.id.textViewTitleProduct);
                //contentView.setTag(holder);
            } else {
                holder = (ViewHolder) contentView.getTag();
            }
            
            holder.name.setText( date.get( position ).get( "name" ).toString() );
            holder.address_description.setText( date.get( position ).get( "address" ).toString() );
            holder.telephone.setText( date.get( position ).get( "telephone" ).toString() );
            holder.image.setImageResource((Integer) date.get( position ).get( "image" ));
            holder.itemType = (Integer) date.get( position ).get( "type" );
            contentView.setTag(holder);
            
            return contentView;
        }

    }